CN115585191A

CN115585191A - Sliding bearing with vapor deposition coating

Info

Publication number: CN115585191A
Application number: CN202211417463.9A
Authority: CN
Inventors: 吴鲁纪; 杨林杰; 陈俊豪; 李俞峰; 曹延军; 李娜娜; 耿福震
Original assignee: Zhengzhou Research Institute of Mechanical Engineering Co Ltd
Current assignee: Zhengzhou Research Institute of Mechanical Engineering Co Ltd
Priority date: 2022-11-14
Filing date: 2022-11-14
Publication date: 2023-01-10

Abstract

The invention relates to a sliding bearing with a vapor deposition coating, which is characterized in that a layer of graphite-like coating is coated on a bearing tile substrate to replace a sliding bearing material mainly made of Baji alloy, so that the strength, the compression resistance, the PV value and the working temperature range of the bearing are improved; compared with the traditional slide bearing cast with Babbitt metal, the slide bearing of the invention has the advantages that the wear resistance is obviously improved, the wear rate is greatly reduced, and the corresponding coating has excellent tribological performance.

Description

Sliding bearing with vapor deposition coating

Technical Field

The invention belongs to the technical field of bearings, and particularly relates to a sliding bearing with a vapor deposition coating.

Background

The sliding bearing tile blocks are cast by a gravity casting method and a centrifugal casting method, the yield and the material utilization rate are not ideal, and Babbitt metal cannot be cast on the tile blocks with smaller sizes; meanwhile, the Babbitt metal is limited in strength performance and high-temperature performance, and the maximum temperature allowed by the sliding surface of the Babbitt metal is only 120-130 ℃. Due to the development of high-speed and high-performance rotating machinery, the bearing needs to be capable of bearing a high-temperature working state, so that the conventional babbitt metal bearing cannot meet the requirement of technological development, the service temperature of the lead bronze bearing is 30-40 ℃ higher than that of babbitt metal, but the material hardness is high, the lead bronze bearing is easy to bite with a rotor to cause damage, and the lead bearing has great environmental pollution.

Disclosure of Invention

The invention aims to provide a sliding bearing with a vapor deposition coating, which aims to solve the technical problems that a Babyite bearing in the prior art cannot work in a high-temperature state, and a lead bronze bearing material is high in hardness and is easy to damage due to rotor occlusion.

In order to achieve the aim, the technical scheme of the sliding bearing with the vapor deposition coating provided by the invention is as follows:

a sliding bearing with vapor deposition coating comprises a tile bearing substrate, wherein a graphite-like coating is coated on the tile bearing substrate.

Preferably, the pad carrier substrate is made of a copper alloy having a hardness lower than that of mild steel.

Preferably, the graphite-like coating has a thickness of 2 to 3 μm.

Compared with the prior art, the invention has the following beneficial effects:

the invention relates to a sliding bearing with a vapor deposition coating, wherein a bearing bush substrate can be copper alloy or other soft metals, a layer of graphite-like coating is deposited on the inner surface of the bearing bush through vapor deposition, the strength, the pressure resistance, the PV value and the working temperature range of the bearing are improved, the service working condition range of the bearing is expanded, the bearing can normally work under extreme working conditions such as high temperature, high load, ultra high speed and the like, and the safe and stable operation of equipment such as a rotating mechanical system and the like is ensured.

Drawings

FIG. 1 is a block diagram of a vapor deposited coated sliding bearing provided by the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, elements defined by the phrases "comprising a" \8230; "do not exclude processes, methods of including such elements.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" when they are used are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meanings of the above-mentioned terms in the present invention can be understood by those skilled in the art through specific situations.

In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the term "provided" may be used in a broad sense, for example, the object of "provided" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be a detachable connection or a non-detachable connection. The specific meanings of the above-mentioned terms in the present invention can be understood by those skilled in the art through specific situations.

The present invention is described in further detail below with reference to examples.

The present invention provides a vapor deposition coated sliding bearing embodiment 1:

as shown in fig. 1, in this embodiment, a sliding bearing with a vapor deposition coating comprises a pad bearing substrate 1, wherein the pad bearing substrate 1 is made of a copper alloy, other soft metal or nonmetal material, the hardness of the copper alloy is lower than that of low-carbon steel, and a graphite-like coating 2 is deposited on the inner surface of the pad through vapor deposition, and the coating has a thickness of 2-3 μm to form a self-lubricating surface.

In the process of starting the rotor, before a dynamic pressure oil film is not established, the abrasion of the bearing and the shaft is effectively reduced by utilizing the self-lubricating property of the graphite-like coating 2, the service life of the bearing and the shaft is greatly prolonged, and a series of performance deterioration caused by the abrasion of the bearing is avoided.

The graphite-like plating layer 2 has uniform structure and consistent thickness, so that machining is not needed after plating; the coating can be deposited again after the coating is abraded or damaged, and the bearing can be reused. The plating layer still has good bearing capacity under the condition of bearing surface high pressure, and is rarely worn or creeped; in addition, the temperature application range is wider than that of babbitt metal materials, and the lubricating property can be improved by coating on small-size tiles which cannot be cast by babbitt metal. Due to the good bearing durability and the low friction factor of the material, the size of the bearing and the size of the whole equipment can be reduced properly.

Claims

1. A sliding bearing with a vapor deposition coating is characterized by comprising a tile bearing substrate, wherein a graphite-like coating is coated on the tile bearing substrate.

2. A vapour deposition coated sliding bearing according to claim 1 wherein the pad carrier substrate is made of a copper alloy having a hardness lower than that of mild steel.

3. A vapour deposition coated sliding bearing according to claim 2, wherein the graphite-like coating has a thickness of 2-3 μm.